Is anyone else having this issue?
I've tried searching for this, but I haven't seen anyone reporting this behavior anywhere else on the forums.
I honestly do not think that this is specific to my system, but rather a bug with the Prepar3d itself.

However the lack of others noticing this could be a due couple of things:

a: not a lot of VR users and out of this small pool of users, those who did notice it have not posted it.
b: those who do use VR might be turning off reflections to gain FPS and therefor are unaware of this issue.
c: could still be just my system bugging out.

I see the reflections moving with head movement as well when I am in VR. I use a Rift CV1. It is noticeable. The other performance issues in VR (lack of FPS, periodic loading of terrain, etc.) make the reflection issue minor to me. So, I haven't mentioned it before.

Fair enough, but without reporting it Devs might not even be aware that the issue exists. Also this might be an easy fix within a shader compared to the system's stability and FPS optimization, so you know a "low hanging fruit".